Annie Jump Cannon observed that there was variation in the color patterns between the atomic spectra of different stars. She used these variations
to determine which elements were present in each star. What type of
electromagnetic radiation produced the spectra she analyzed?
F. visible
G. infrared
H. microwave
1.
ultraviolet

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.